Graco LT Series, Mini-HVLP, HVLP, Conventional Instructions - Parts Manual
Instructions - Parts
LT Series
Gravity Feed Air
Spray Guns
For professional spray application of liquid coating materials.
Models
Needle/
Part
Model
Mini-HVLP
Conventional
HVLP
* Maximum HVLP Compliant Pressure
No.
249346 1.0/0.039
249347 1.4/0.055
249348 1.8/0.071
249349 1.3/0.051
249350 1.4/0.055
249351 1.5/0.059
249352 1.8/0.071
Nozzle Size
(mm/in)
Maximum
Working Air
Pressure
100 psi
(0.7 MPa, 7 bar)
100 psi
(0.7 MPa, 7 bar)
100 psi
(0.7 MPa, 7 bar)
Recommended
Maximum Inbound
Air Pressure
29 psi
(0.20 MPa, 2.0 bar)*
60 psi
(0.41 MPa, 4.1 bar)
29 psi
(0.20 MPa, 2.0 bar)*
311104C
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Troubleshooting . . . . . . . . . . . . . . . . . . . . 5
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Technical Data . . . . . . . . . . . . . . . . . . . . . . 7
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Graco Standard Warranty . . . . . . . . . . . . 10
Graco Information . . . . . . . . . . . . . . . . . . 10
Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2005, Graco Inc. is registered to I.S. EN ISO 9001
II 2 G
Warnings
Warnings
The following general warnings are related to the safe setup, use, grounding, maintenance and repair of this equipment. Additional more specific warnings may be found throughout the text of this manual where applicable.
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
• Ground equipment and conductive objects in work area.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
• Keep a fire extinguisher in the work area.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical D ata in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings.
• Check equipment daily. Repair or replace worn or damaged parts immediately.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your Graco distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swallowed.
• Read MSDS’s to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating area
of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic fumes,
burns, and hearing loss. This equipment includes but is not limited to:
• Protective eyewear
• Clothing and respirator as recommended by the fluid and solvent manufacturer
• Gloves
• Hearing protection
PRESSURIZED EQUIPMENT HAZARD
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and
cause serious injury.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
2 311104C
Setup
Setup
1. Install an air pressure regulator on gun air supply
line to control air pressure.
2. Install a shutoff valve downstream of the air regula-
tor to shut off gun air.
3. Connect a clean, dry, filtered air supply.
4. Connect air supply line to gun air inlet (21). FIG. 1.
Connect other end to shutoff valve.
5. Install fluid filter (29) into fluid inlet (6). Refer to
page 8.
6. Screw on gravity cup (30).
7. Remove gravity cup cover (A) and fill cup with sol-
vent to flush if this is first time using equipment.
A
6
30
Pressure Relief Procedure
WARNING
Follow Pressure Relief Procedure when you stop
spraying and before cleaning, checking, or servicing
equipment. Read warnings, page 2.
1. Turn off gun air supply.
Adjust Spray Pattern
1. Rotate air cap to change spray pattern direction.
IG. 2.
F
Vertical Pattern Adjustment
F
IG. 2
7
20
22
IG. 3
F
2. FIG. 3. For maximum fluid flow and to prevent pre-
mature fluid nozzle wear, turn fluid adjustment
knob (20) left until no trigger restriction is felt; trigger should be able to touch gun handle. Then turn
knob out 1/2 turn more.
F
21
IG. 1
3. If further fluid flow restriction is needed, use differ-
Flush Spray Gun
CAUTION
Flush spray gun before using it. Use solvent that is
compatible with gun wetted parts and fluid that will be
sprayed. Use lowest possible pressure, and spray into
grounded metal waste container. Read warnings,
page 2.
After flushing, follow Pressure Relief Procedure.
311104C 3
ent size needle/nozzle/air cap combination.
If necessary, fluid adjustment knob (20) can be
turned right to reduce volume of fluid output. However, continuously spraying with fluid adjustment
knob closed causes accelerated abrasive wear on
fluid needle and trigger/air valve shaft interface.
If fluid adjustment knob (20) is turned in all the way,
the gun emits only air.
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